Wheel center



FIG. 1 is a front perspective view of a wheel center showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a side elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a section view thereof taken along line 6--6 of FIG. 2.

The broken line showing of the wheel rim, the central hub area, and the peripheral boundary of the wheel center is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a wheel center, as shown and described. 